Sounds like you are using the red dot like iron sights.
The target needs to be clear. Not the dot. Many people don’t realize that if they are using the optic properly, the dot will not be crisp regardless of how good your eyesight is - unless your target is very close.
The dot should not be your point of focus like a front iron sight would be with irons. The dot is superimposed on the crisp target while keeping both eyes open. Visualize it as if you are looking at the target and the dot just appeared on the intended point of impact, like someone slid a sheet of glass with a dot in it between your eye and the target. Don’t focus on the dot and follow the dot to the target.
Look at a light switch. Focus on one of the screws holding it in place. Now point at the screw without taking your eyes off it, hard focus stays on the screw - this is how it should be done.
If you are trying to get a hard focus on the dot, like a front sight on an iron sighted pistol or rifle, you’re doing it wrong. Close your eyes, take a breath, and open them again focusing on the target.
The whole point of the RDS is to give your brain one focal point (your target/threat) to think about, instead of 3 focal points (rear sight, front sight, target).
Don't sprint your eyes between focal points.
ID your target, superimpose the dot over where you want to hit keeping both eyes open, and press the trigger straight to the rear. Repeat as necessary.